Rated 4.22 out of 5 based on 9 customer ratings

(9 customer reviews)

Positz BigBum Oversize Bike Seat Unisex

Name: Positz BigBum Oversize Bike Seat Unisex – Mr Cycling World
Brand: Positz
SKU: PSTZ-3069
Price: 74.95 AUD
Availability: InStock
Rating: 4.22 (9 reviews)

$74.95

In stock

Ditch the Pain, Ride in Comfort: Introducing the Positz Big Bum Bike Seat

Say goodbye to saddle soreness: Experience the difference a truly comfortable bike seat can make. The Positz Big Bum is designed for everyday riders who want to enjoy their rides, not dread them because of a painful seat. Make no mistake, this bicycle saddle is BIG… just the way you want it.

Oversized comfort: Unlike narrow, competition-style saddles, the Big Bum offers ample cushioning and support for a relaxed and enjoyable ride.
Designed for you: The dual-contoured design provides an anatomic fit, while the dual-layer base with air channels absorbs bumps for a smoother ride.
Easy to clean and install: The synthetic cover wipes clean easily, and the Big Bum comes complete with a Positz twin-rail saddle clamp for hassle-free installation.

Key Features:

Oversized design for maximum comfort
Dual-contoured for an anatomic fit
Dual-layer base with air channels for natural suspension
Easy-to-clean synthetic cover
Easy to install with Positz twin-rail saddle clamp (included)
Unisex design
All-black colour
Designed in Australia, made in Taiwan

Specifications:

Length: 25cm (nose to end)
Width: 32cm (side to side)
Height: 5cm (excluding clamp and rails)
Total weight: 1250g
Fits seat posts: 22.2mm diameter
2-rail standard round 7mm (diameter) x 38mm (inside to inside) x 52mm (outside to outside) – standard steel saddle clamp

Includes:

1x Positz BigBum Oversize Bike Seat
1x Positz Saddle Clamp

Don’t just take our word for it!

⭐⭐⭐⭐⭐ “The Positz ‘BigBum’ bike seat is simply brilliant. I do not have a big bum! – but spreading your weight across a larger seat area makes for far greater comfort. It was more expensive but worth every cent given the greater comfort. Delivery time was good.” – Stephen J – Verified buyer (5-Star Review)

Brand	Positz
Gender	Unisex
Suits Bike Type	Commuter Bike, Hybrid Bike
Colour	Black

9 reviews for Positz BigBum Oversize Bike Seat Unisex

4.2

Based on 9 reviews

5 star	44	44%
4 star	33	33%
3 star	22	22%
2 star		0%
1 star		0%

1-9 of 9 reviews

Stephen JUST
Verified owner

Featured Review

19 January 2022

The Positz ‘BigBum’ bike seat is simply brilliant. I do not have a big bum ! – but spreading your weight across a larger seat area makes for far greater comfort. It was more expensive but worth every cent given the greater comfort. Delivery time was good.

(2) (0)
Andrea
Verified owner

23 April 2025

Perfect for me as I get older. Much more comfortable than my old standard seat.

(0) (0)
Gregory Wilson
Verified owner

21 December 2023

Much better now – can I return the original ?!?

(0) (0)
Anonymous
Verified owner

29 March 2023

Good quality comfortable seat

(0) (0)
Harold M.
Verified owner

29 November 2023

A little slippery but otherwise ok

(0) (0)
Ken
Verified owner

22 March 2023

Fit for purpose – appears well made – value for money

(0) (0)
Barbara H.
Verified owner

20 February 2023

Much, much better than my previous expensive, fancy, but too small seat. My previous seat led to much aching of the sitting bones. With this BigBum seat I can get all the way home (2.5 hours) without having to stop and massage. Adding suspension would make it absolutely perfect. But as it is, it is still fantastic.

(0) (0)
Bruce Woolcock
Verified owner

19 September 2023

Really slippery

(0) (0)
A.S M.
Verified owner

17 May 2023

This seat Is better than a normal bike seat as it supports more of my butt. Although it could be more thickly padded.

(0) (0)

Add a review

Currently, we are not accepting new reviews

Positz BigBum Oversize Bike Seat Unisex

Rated 4.22 out of 5 based on 9 customer ratings

(9 customer reviews)

$74.95

In stock

Category: Saddles Brand: Positz

What other people are saying:

Tacx Daiya Cycling Water Bottles – 550ml, Gold

I purchased some water bottles from Mr Cycling World, then realised I had forgotten to put in an additional item into my cart. Not wanting to pay an additional shipping cost, I emailed support and was pleased to receive a quick reply from them with a code to use for the missed purchase to remove shipping and they would send everything to me in the one go. Absolutely excellent customer service, was polite and quick to respond. Received my order in record time too! I highly recommend them for any bike parts or accessories.

Dale M / VIC (verified)

Excellent range and delivery… – Good product range and our order a few days before Christmas was promptly delivered, I actually didn’t expect it until the New Year. Happy Holidays. Dean and Tracy.

Dean / QLD (verified)

Tops!

Michael Cook / CRESTWOOD NSW (verified)

The Website was easy to use, service was fast and hassle free. I got the item a bit faster than they quoted. I am a happy customer.

Rob Auchterlonie / VIC (verified)

Review of Positz Set of 3 Standard Bike Tyre Levers Black

Best customer service, communication and product which was packed really well to avoid any damage to the tyres! Thank you so much

Nash B / West Hoxton NSW (verified)

⭐⭐⭐⭐⭐ With thousands of verified customer reviews, you can shop with confidence at Mr Cycling World. Friendly, fast, reliable service — from a small Australian business. See what others are saying.